Fender Design - Wheel Arch Challenge

FENDER WHEEL ARCH:

The wheel arch is the semicircular portion of the fender that sits over the car's wheel. The wheel arch of the fender should be constructed in such a way as to screen the wheels and shelter both the passenger compartment and pedestrians from flying water, dirt, and stones. To prevent debris or stones, dirt, sand, snow, etc. from getting flung into the vehicle or the BIW area, as well as outside the vehicle and onto other vehicles or pedestrians on the road, the wheel arch region of the fender is typically built as a cover or shield over the tire along its perimeter. The wheel arch and fenders of the vehicle must meet the criteria and requirements established by the respective countries for it to be licensed in those countries. The European standards stipulate that there must be a predetermined clearance or a minimum separation of 10 mm between the fender and the corresponding tire at specific locations.

PROCEDURE:

• A vertical and horizontal axis is drawn from the wheel's center.
• A represents the intersection of the vertical axis.
• At 30 degrees to the left and 50 degrees to the right, similar references are drawn and designated as B and C, respectively.
• Point E is obtained by drawing a line of 150 mm in length perpendicular to the horizontal axis and normal from the normal point on the fender.
• A new section D is created at the center of the arc that is formed by sections C and E.
• To determine whether the fender complies with the European standards, as indicated below, the value of "L" at each section and the value of "a" are determined.

INTERSECTION POINTS :

POINT A:

POINT B:

POINT C:

POINT D:

POINT E:

CONCLUSION:

From the above observations, it is clear that intersection points C, D, and E do not have a 10mm wheel arch gap clearance between the tire and fender.

HENCE THE GIVEN FENDER DOES NOT PASS THE EUROPEAN STANDARDS.